Fire box



.Jam A11, 1927.

L. BERNHARD FIRE BOX Filed April 28, 1923 @IMX www

Il' I l I' fvr Patented aan. 11, 1927.

UNITED STATES FIRE BOX.

Application' tiled April 28, 1923. Serial N0.635,347.

The principal object of my invention is to provide a construction for use with' boilers or Dutch ovens.` for exam le, or for other uses such that the fire bricks will be 'protected from burning and will not scale o by burning or clinking. Other objects will be` pointed out below.

A feature of my invention is a wall of material, preferably vhigh temperature cement, to protect thcbricks against heat.

Another feature is a particular relative location of the tire bricks to furnish a grip "to hold said wall in place,

Another feature is that in one course the bricks are reversely arranged. with relation totthe corresponding bricks of an adjacent course.

Other features will be pointed out below. In the drawing- Figure 1 is aplan of a tire box setting 'embodying my invention;

Figure -2 is an elevation of a relieving arch extending lengthwise of, and above, the

setting; and

Figure 3 is a section on line 3-3 of Figure 1.

The outer walls of the setting may be made ofre'd brick A and above the fire box is a relieving arch B `which may. it' desircd, extend the entire length ot' the chamber l) t'or the boiler, for example.

ln Figure 1 the tire bricks E and tire bricks F form one course and are shown in t'ull lines. The bricks ll are laid parallel but their long i'aces are at, an angle to tHe chamber so that they form pockets such as e I'or a purpose to be. described below. 'l'he bricks li are laid parallel to each other and their long faces `are also at an angle to the chamber butI rcversely with relation to the bricks ll and they also vform pockets such ln the next' course below there are bricks l parallel to each other and to bricks F and in this course. also are bricks ll parallel to each other and to bricks F.. there being pockets g and pocket-s /i similar to pockets e and f'. lt will be observed that pocket c is located between the brick G in the course bclow and the brick (bin the course above and the other pockets are similarly located. the spaces c however being vertically continuous. while there is no continuous vertical space where the pockets f and h are located.

Suitable binders J are provided to hold the courses together.

At the Ainside en ds of thev bricks E and Gr I apply some suitable heat' resisting material K, preferably high temperature cemeut; and this completely fills the pockets eand g and the spaces e', which thus furnish a large and'substantial gri ping area for the cement which preferabll) wardly slightly from the inner corners of the bricks as clearly shown in Figure'3.

I also preferably till the pockets f and lz with said cement in order to protect the' portions of the bricks adjacent to those pockets.

lt will be understood that I may have as many courses as desiredbut adjacent courses will have relatively reverse arrangement, that'is to say, any particular brick in one course .will be at a different angle to said ehamberlfrom the angle of the brick imme .diately above or below it.

What I claim is: 1. A fire box comprisinga chamber; a

course of bricks formed of two sets, one set having its bricks parallel to each other and at an angle to said chamber and the other,

setl having its bricks parallel to each other and at an angle to said chamber diierent from the angle of the first-mentioned'set; `and heat resisting material between said two sets.

2. A fire box comprising a chamber; one vcourse of bricks formed of two sets; one set having its bricks parallel to each other and having its bricks parallel to "each other and at an angle to said chamber different from the angle of the first-mentioned set; heatresisting material between said two sets: a second course ot" bricks adjacent the first course and formed of two sets, one set hav ing its bricks parallel to each other and at an angle to said chamber but re'versely with relation to the adjacent bricks of the. firstmentioned course and the other set having its bricks parallel toeach other and at an angle to Saidchamber different 'from the angle of the first-mentioned set of said other course but reversely with 'relation to thc ailjaentbricks of the first-mentioned course; and heat-resisting material betweenl the two sets of said second course.

3. A fire box comprising a chamber: one course of bricks formed of two sets; one set having its bricks parallel to cach other and at an angle to said chamber and the other set' having its bricks parallel 'to each other and at an angle to said chamber-different yv extends inlat an angle to said chamber and the other set if; Leiieiei Wiiifi reieion to the adjacent bricks of the' irstfoenione. course and tbe 'oiieif se@ having is bricks pai'eiiel to each other and at en aiigie to seid chamber diii'eren from the angie of the Eni-mentioned set of said o'tbeij course but reveisey with ieiation to the edjeeenii bricks of the iil'sli-i'rientioned course; and beaviesieting materiel between the two-sets of Seid second course; the inner sets of said Couses forming' pockets adjacent saif chamber; imeil high temperature cement iiiing seci pockets and extending inwardly toweid said chamber beyond the inner corners of said bricks to form a well heid in piace'by that Aportion of ih@ Gemelli wbich'is in said, pockes.

4i. A fire box comprising elch-amber; one com-se of bucks formed o' two sets, oneist having its bricks parallel to eech other and imving its bricks parallel to eeeh other and :it im angie to seid chamber different from the angie of the first-mentioned set; a second course oi' bricks adjacent tbe iiist course and formed of two sets, one set having its bric-ks parallel to each other and at `:in angie cov smid chamber but reversely with relation t0 the' adjacent bricks of the first-mentioned course and ibo other set having its bricks piu-Ud to euch oihcr and a@ an angieto said cban'iber different from the angle of the iirst-mentioned. sei; of seid other course but irevei-seiy with relation to the adjacent bricks of the iirs't-mentioned course; the bricks of one course overiappng the bricks of the other' course s0 as to break continuous air spaces between Said course.

Lome BERNHARD.

25 ai, an angie to said chambeiI and the other Set- A 

